1 files changed, 44 insertions, 0 deletions
diff --git a/test/MC/COFF/weak-symbol.ll b/test/MC/COFF/weak-symbol.ll
new file mode 100644
index 0000000..7f2e87c
--- /dev/null
+++ b/test/MC/COFF/weak-symbol.ll
@@ -0,0 +1,44 @@
+; Test that weak functions and globals are placed into selectany COMDAT
+; sections with the mangled name as suffix. Ensure that the weak linkage
+; type is not ignored by the backend if the section was specialized.
+;
+; RUN: llc -mtriple=i686-pc-win32 %s     -o - | FileCheck %s --check-prefix=X86
+; RUN: llc -mtriple=i686-pc-mingw32 %s   -o - | FileCheck %s --check-prefix=X86
+; RUN: llc -mtriple=x86_64-pc-win32 %s   -o - | FileCheck %s --check-prefix=X64
+; RUN: llc -mtriple=x86_64-pc-mingw32 %s -o - | FileCheck %s --check-prefix=X64
+
+; Mangled function
+; X86: .section .text$_Z3foo
+; X86: .linkonce discard
+; X86: .globl __Z3foo
+;
+; X64: .section .text$_Z3foo
+; X64: .linkonce discard
+; X64: .globl _Z3foo
+define weak void @_Z3foo() {
+  ret void
+}
+
+; Unmangled function
+; X86: .section .sect$f
+; X86: .linkonce discard
+; X86: .globl _f
+;
+; X64: .section .sect$f
+; X64: .linkonce discard
+; X64: .globl f
+define weak void @f() section ".sect" {
+  ret void
+}
+
+; Weak global
+; X86: .section .data$a
+; X86: .linkonce discard
+; X86: .globl _a
+; X86: .zero 12
+;
+; X64: .section .data$a
+; X64: .linkonce discard
+; X64: .globl a
+; X64: .zero 12
+@a = weak unnamed_addr constant { i32, i32, i32 } { i32 0, i32 0, i32 0}, section ".data"